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The Absent-Minded Professor is a 1961 American science fiction comedy film directed by Robert Stevenson and produced by Walt Disney Productions. It is based on the 1943 short story "A Situation of Gravity" by Samuel W. Taylor. The title character was based in part on Hubert Alyea, a professor emeritus of chemistry at Princeton University, who was known as "Dr. Boom" for his explosive demonstrations. The film stars Fred MacMurray as Professor Ned Brainard, alongside Nancy Olson, Keenan Wynn, Tommy Kirk, Leon Ames, Elliott Reid, and Edward Andrews. The plot follows Brainard as he invents a substance that defies gravity, which he later exploits through various means.